Every BMW I have ever owned burns some oil (the X5 more than others).

My dealer provides a bottle of BMW oil in a carry case, with a funnel and gloves, complimentary to every vehicle purchaser. Dealers sell that accessory kit if your dealer didn't throw one in.

Suggest you buy a quart/litre and keep it in the vehicle. The X5M/X6M don't use the traditional M oil (10w-60) but rather 5w-30.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue